Cobb Weather Forecast

    • 53
    • 69

    Mostly Sunny

    • 61
    • 80

    Sunny

    • 63
    • 84

    Mostly Sunny

    • 61
    • 80

    Mostly Sunny

    • 62
    • 82

    Sunny

    • 61
    • 82

    Sunny

Today 17 Sep Southwestern Lake

Mostly sunny. Patchy fog in the morning. Highs 67 to 77. South wind around 5 Mph shifting to the southeast in the afternoon.

Tonight 17 Sep Southwestern Lake

Mostly clear. Lows 50 to 60. Southwest wind around 10 Mph shifting to the northwest overnight.

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Cobb Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (23.6 miles)

  • Lowest 5 September, 2026

    46.7 °F

  • Average September

    68 °F

  • Highest 10 September, 2026

    101.6 °F

Climate (2021–2026)

Santa Rosa, Santa Rosa Sonoma County Airport (23.6 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    72.9 °F
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